package cn.web.tunnelrobot.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArraySet;

@Slf4j
@ServerEndpoint(value = "/voiceWebSocket")

public class WebSocketServerVoice {
    //静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。
    public static List<InetAddress> inetAddresses = new ArrayList<>();
    //静态变量，用来记录当前在线连接数。应该把它设计成线程安全的。
    private static int onlineCount = 0;
    //concurrent包的线程安全Set，用来存放每个客户端对应的MyWebSocket对象。
    private static CopyOnWriteArraySet<WebSocketServerVoice> webSocketSet = new CopyOnWriteArraySet<WebSocketServerVoice>();
    //与某个客户端的连接会话，需要通过它来给客户端发送数据
    private Session session;
    /**
     * 连接建立成功调用的方法*/
    @OnOpen
    public void onOpen(Session session) throws Exception {
        this.session = session;
        webSocketSet.add(this);     //加入set中
        addOnlineCount();//在线数加1
/*        if(getOnlineCount() > 1){
            System.out.println("实时语音人数超出限制,当前有" + getOnlineCount()+"人!");
        }
        System.out.println("实时语音有新连接加入！当前在线人数为" + getOnlineCount());*/
    }

    /**
     * 连接关闭调用的方法
     */
    @OnClose
    public void onClose() {
        webSocketSet.remove(this);  //从set中删除
        subOnlineCount();           //在线数减1
        //System.out.println("实时语音有一连接关闭！当前在线人数为" + getOnlineCount());
    }

    /**
     * 收到客户端消息后调用的方法
     *
     * @param message 客户端发送过来的消息*/
    @OnMessage
    public void onMessage(String message, Session session) {
        //System.out.println("来自客户端的消息:" + message);
        //群发消息
        for (WebSocketServerVoice item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
//                e.printStackTrace();
            }
        }
    }

    /**
     *
     * @param session
     * @param error
     */
    @OnError
    public void onError(Session session, Throwable error) {
        System.out.println("发生错误");
//        error.printStackTrace();
    }
    public void sendMessage(String message) throws IOException {
        this.session.getBasicRemote().sendText(message);
    }
    /**
     * 群发自定义消息
     * */
    public static void sendInfo(String message) throws IOException {
        //System.out.println(message);
        for (WebSocketServerVoice item : webSocketSet) {
            try {
                item.sendMessage(message);
            } catch (IOException e) {
                continue;
            }
        }
    }
    public static synchronized int getOnlineCount() {
        return onlineCount;
    }
    public static synchronized void addOnlineCount() {
        WebSocketServerVoice.onlineCount++;
    }
    public static synchronized void subOnlineCount() {
        WebSocketServerVoice.onlineCount--;
    }

}
